Robtex

Up: 168.123.0.0/16
Can't show all results, try to descend to a more specific CIDR
Down left: 168.123.0.0/18
Down right: 168.123.64.0/18
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
168.123.2.50	PTR	ns.edu.gu
168.123.2.50	A	home.web.gu
168.123.2.51	PTR	naan.uog.edu
168.123.2.101	A+PTR	gadao.gov.gu
168.123.2.103	A+PTR	triton.edu.gu
168.123.4.10	PTR	ns.gov.gu
168.123.4.10	A	ns.web.gu
168.123.4.10	A	ns.com.gu
168.123.9.66	A+PTR	wwwmail.uog.edu
168.123.9.67	PTR	uog9.uog.edu
168.123.9.68	A+PTR	naan.uog.edu
168.123.9.69	A	ns.uog.edu
168.123.10.25	A	uogcc3.uog.edu
168.123.16.8	A	realvideo.web.gu
168.123.16.11	PTR	guam.web.gu
168.123.16.15	PTR	cambot.edu.gu
168.123.16.21	A	ariana.web.gu
168.123.16.29	A	govt.gov.gu
168.123.16.29	A	k9.gov.gu
168.123.113.81	A	mail.gov.gu